Finding the Fourth Proportional to 318,959.80, 478,439.70 and 97,343.80
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Solution
The fourth proportional to 318,959.80, 478,439.70 and 97,343.80 is: 146,015.70
Step by Step Solution
- Step 1: Write the proportion equation
318,959.80 : 478,439.70 = 97,343.80 : x - Step 2: Convert to fraction form
318,959.80/478,439.70 = 97,343.80/x - Step 3: Cross multiply
318,959.80x = 478,439.70 × 97,343.80 - Step 4: Simplify right side
318,959.80x = 46,573,138,468.86 - Step 5: Solve for x
x = 46,573,138,468.86/318,959.80 - Step 6: Final answer
x = 146,015.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.